Five SEC football programs will play their first game of the 2018 season under a different head coach than the man guiding the team at the start of the 2017 season. That will bring to 155 the coaching changes that have been made in the league from one year to the next since the conference's first football season in 1933.

The new coaches will be Chad Morris at Arkansas, Dan Mullen at Florida, Joe Moorhead at Mississippi State, Jeremy Pruitt at Tennessee and Jimbo Fisher at Texas A&M. Morris was SMU's head coach, Mullen was Mississippi State's head coach, Moorhead was Penn State's offensive coordinator, Pruitt was Alabama's defensive coordinator and Fisher was Florida State's head coach.

What can the schools and their football fans expect from their new coaches? The numbers say it will be a mixed bag:

6 Are the most SEC teams in one year that had a different head coach to start a season than was coaching the team for the first game of the previous season. That came in 1946, but there's a qualifier for that first post-war season: Two of the coaches were returning to their pre-war jobs in Tennessee's Robert Neyland and Vanderbilt's Red Sanders. Next season will be the first in which five SEC members will open play with a head coach who is in his first year in that position at the school.

7 Fewer games were won by Arkansas in 2012 under John L. Smith than were won by the Razorbacks in 2011 under Bobby Petrino. That's the largest decline in victories for a first-year SEC coach. Smith's only Arkansas team went 4-8 after Petrino's final Arkansas team went 11-2. Petrino lost his job in a scandal in April 2012, and the Razorbacks turned to Smith, who'd been Arkansas' special-teams coach for the previous three seasons but had departed after the 2011 season to take over the Weber State program. In only three other instances has an SEC member changed coaches and won five or fewer games than it did in the former coach's final season. Each team won six fewer games -- Alabama under Mike DuBose in 1997, Alabama under Mike Shula in 2003 and Vanderbilt under Derek Mason in 2014.

7 SEC coaches did not win a game in their first seasons. Bear Wolf at Florida in 1946, Slick Morton at Mississippi State in 1949, Ears Whitworth at Alabama in 1955, Tommy O'Boyle at Tulane in 1962, Charley Pell at Florida in 1979, Jerry Claiborne at Kentucky in 1982 and Lou Holtz at South Carolina in 1999 didn't have a victory in their first seasons.

7 SEC coaches won at least 10 games in their first seasons. Bill Battle at Tennessee in 1970, Billy Kinard at Ole Miss in 1971, Mike Archer at LSU in 1987, Terry Bowden at Auburn in 1993, Les Miles at LSU in 2005, Gus Malzahn at Auburn in 2013 and Jim McElwain at Florida in 2015 reached double digits in victories in their first seasons.

8 Previous changes have featured a coach going directly from one SEC member to another, as Dan Mullen has in leaving Mississippi State after nine seasons for Florida. While several coaches have guided more than one SEC program, including three of the most successful in Paul "Bear" Bryant, Steve Spurrier and Nick Saban, the ones who have gone directly from one league member to another are Bill Curry (Alabama 1987-89 and Kentucky 1990-96), Doug Dickey (Tennessee 1964-69 and Florida 1970-78), Gerry DiNardo (Vanderbilt 1991-94 and LSU 1995-99), Red Drew (Ole Miss 1946 and Alabama 1947-54), Harry Mehre (Georgia 1928-37 and Ole Miss 1938-1945), Houston Nutt (Arkansas 1998-2007 and Ole Miss 2008-2011), Tommy Tuberville (Ole Miss 1995-98 and Auburn 1999-2008) and Chet Wynne (Auburn 1930-33 and Kentucky 1934-37). DiNardo, Drew and Tuberville had better records at their second stops than they did at their first. The others did not. Mullen had a 69-46 record at Mississippi State.

8 Are the most victories for a first-year Mississippi State coach in the SEC era. Ralph Sasse started his stay at MSU with an 8-3 record in 1935 and Allyn McKeen began his tenure with the Bulldogs with an 8-2 record in 1939.

9 Are the most victories for a first-year Arkansas coach since the Razorbacks joined the SEC. Houston Nutt started his stay at Arkansas with a 9-3 record in 1998.

10 Are the most victories for a first-year Florida coach in the SEC era. Jim McElwain started his stay at Florida with a 10-4 record in 2015.

10 SEC coaches have won at least five more games in their first seasons than their predecessors won in their last seasons, topped by the nine-win improvement for Auburn under Gus Malzahn in 2013. The Tigers went from three victories in 2012 to 12 in 2013. Ole Miss made a seven-win improvement under Johnny Vaught in 1947. Six-win improvements were made by Auburn in 1993 under Terry Bowden and Ole Miss in 2008 under Houston Nutt. Five-win improvements were made by Ole Miss under Harry Mehre in 1938, Kentucky under Paul "Bear" Bryant in 1946, Auburn under Ralph "Shug" Jordan in 1951, Arkansas under Nutt in 1998, LSU under Nick Saban in 2000 and Ole Miss under Hugh Freeze in 2012

10 SEC seasons have started with the same head coaches on the sidelines as were on the sidelines for the first game of the previous season. Those years were 1937, 1957, 1959, 1965, 1966, 1968, 1972, 1988, 1992 and 2006.

11 Are the most victories for a first-year Tennessee coach in the SEC era. Bill Battle started his stay at Tennessee with an 11-1 record in 1970.

12 Are the most victories for a first-year SEC coach. Gus Malzahn started his stay at Auburn with a 12-2 record in 2013.

23 SEC programs have changed coaches from one season to the next since 2010, including five for the 2018 season. That's the most in one decade in SEC history, eclipsing the 22 of the 1990s. The fewest coaching changes came in the 1980s, when there were 12.

66 Coaches have had a better record in their first seasons at SEC members than their predecessors had in their last, 59 have had a worse record and 25 have had the same record.

72 Coaches have posted a better record in their stints at SEC members than their predecessors did (based on winning percentage), and 78 have had a worse record.

228 More games were won by Paul "Bear" Bryant than by his predecessor as Alabama's head coach, J.B. "Ears" Whitworth. Bryant compiled a 232-46-9 record with the Crimson Tide from 1958 through 1982. Whitworth had a 4-24-2 record at Alabama from 1955 through 1957. Bryant's successor at Alabama, Ray Perkins, had a 32-15-1 record with the Tide from 1983 through 1986, but that still was 200 fewer victories than Bryant had.

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Mark Inabinett is a sports reporter for Alabama Media Group. Follow him on Twitter @AMarkG1.